From: Jacek Anaszewski <jacek.anaszewski@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
cy_huang@richtek.com, linux-kernel@vger.kernel.org,
gene_chen@richtek.com, benjamin.chao@mediatek.com,
robh+dt@kernel.org, linux-mediatek@lists.infradead.org,
dmurphy@ti.com, matthias.bgg@gmail.com,
Gene Chen <gene.chen.richtek@gmail.com>,
Wilma.Wu@mediatek.com, linux-leds@vger.kernel.org,
shufan_lee@richtek.com
Subject: Re: [PATCH v3 1/2] leds: mt6360: Add LED driver for MT6360
Date: Fri, 11 Sep 2020 22:56:10 +0200 [thread overview]
Message-ID: <d2721bb7-6f0e-19af-41b9-0f3ae95cf4f9@gmail.com> (raw)
In-Reply-To: <20200911070503.GA9818@amd>
Hi Pavel,
On 9/11/20 9:05 AM, Pavel Machek wrote:
> Hi!
>
>>> +{
>>> + struct mt6360_led *led = container_of(lcdev, struct mt6360_led, flash.led_cdev);
>>> + struct mt6360_priv *priv = led->priv;
>>> + u32 enable_mask = MT6360_TORCHEN_MASK | MT6360_FLCSEN_MASK(led->led_no);
>>> + u32 val = (level) ? MT6360_FLCSEN_MASK(led->led_no) : 0;
>>> + u32 prev = priv->fled_torch_used, curr;
>>> + int ret;
>>> +
>>> + dev_dbg(lcdev->dev, "[%d] brightness %d\n", led->led_no, level);
>>> + if (priv->fled_strobe_used) {
>>> + dev_warn(lcdev->dev, "Please disable strobe first [%d]\n", priv->fled_strobe_used);
>>
>> Doesn't hardware handle that? IOW, what happens when you have enabled
>> both torch and flash? If flash just overrides torch mode, than you
>> should not prevent enabling torch in this case.
>
> Yep, this is strange/confusing... and was reason why I asked for not
> supporting strobe from sysfs.
What you say now is even more confusing when we look at your ack
under this patch:
commit 7aea8389a77abf9fde254aca2434a605c7704f58
Author: Jacek Anaszewski <j.anaszewski@samsung.com>
Date: Fri Jan 9 07:22:51 2015 -0800
leds: Add LED Flash class extension to the LED subsystem
Some LED devices support two operation modes - torch and flash.
This patch provides support for flash LED devices in the LED subsystem
by introducing new sysfs attributes and kernel internal interface.
The attributes being introduced are: flash_brightness, flash_strobe,
flash_timeout, max_flash_timeout, max_flash_brightness, flash_fault,
flash_sync_strobe and available_sync_leds. All the flash related
features are placed in a separate module.
The modifications aim to be compatible with V4L2 framework requirements
related to the flash devices management. The design assumes that V4L2
sub-device can take of the LED class device control and communicate
with it through the kernel internal interface. When V4L2 Flash
sub-device
file is opened, the LED class device sysfs interface is made
unavailable.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
> Could I get you to remove code you are not commenting at when
> reviewing?
>
>>> +MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
>>> +MODULE_DESCRIPTION("MT6360 Led Driver");
>
> Led -> LED.
>
> Pavel
>
--
Best regards,
Jacek Anaszewski
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-09-11 20:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-07 10:27 [PATCH v3 0/2] leds: mt6360: Add LED driver for MT6360 Gene Chen
2020-09-07 10:27 ` [PATCH v3 1/2] " Gene Chen
2020-09-08 14:13 ` Dan Murphy
2020-09-08 22:25 ` Pavel Machek
2020-09-09 23:49 ` Gene Chen
2020-09-10 12:29 ` Pavel Machek
2020-09-10 20:23 ` Jacek Anaszewski
2020-09-10 20:25 ` Pavel Machek
2020-09-10 20:31 ` Jacek Anaszewski
2020-09-09 13:48 ` Andy Shevchenko
2020-09-10 0:11 ` Gene Chen
2020-09-10 8:18 ` Pavel Machek
2020-09-10 11:34 ` Andy Shevchenko
2020-09-10 12:28 ` Pavel Machek
2020-09-10 11:46 ` Andy Shevchenko
2020-09-10 21:42 ` Jacek Anaszewski
2020-09-11 7:05 ` Pavel Machek
2020-09-10 23:24 ` Gene Chen
2020-09-11 21:21 ` Jacek Anaszewski
2020-09-11 20:56 ` Jacek Anaszewski [this message]
2020-09-07 10:27 ` [PATCH v3 2/2] dt-bindings: leds: Add bindings for MT6360 LED Gene Chen
2020-09-08 13:55 ` Dan Murphy
2020-09-08 22:22 ` Pavel Machek
2020-09-15 15:51 ` Rob Herring
2020-09-08 14:14 ` [PATCH v3 0/2] leds: mt6360: Add LED driver for MT6360 Dan Murphy
2020-09-09 0:00 ` Gene Chen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d2721bb7-6f0e-19af-41b9-0f3ae95cf4f9@gmail.com \
--to=jacek.anaszewski@gmail.com \
--cc=Wilma.Wu@mediatek.com \
--cc=benjamin.chao@mediatek.com \
--cc=cy_huang@richtek.com \
--cc=devicetree@vger.kernel.org \
--cc=dmurphy@ti.com \
--cc=gene.chen.richtek@gmail.com \
--cc=gene_chen@richtek.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-leds@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=matthias.bgg@gmail.com \
--cc=pavel@ucw.cz \
--cc=robh+dt@kernel.org \
--cc=shufan_lee@richtek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).